دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a sub run below a dual or triple packer to permit the correct space-out. See space-out.

n: 1. small spacer wire within a wire-rope strand that positions and supports other wires in the strand. 2. a wire-rope strand pattern that uses filler wires. See filler-wire strand, strand pattern.

a sequence of washes, dispersants, carrying fluids and spacers designed to remove mud and mud cake from the annulus prior to cementing and completion.

n: a ported, extended production tube used as an alternative path for wireline measuring devices.

n: a special preparing fluid that pumps before spacer fluid when pumping cement.

n: the pin that make up of right and left thread and nut.

n: a thin, often tapered piece of material used to fill in space between things (such as for support, leveling, or adjustment of fit). ship drift n: a method that uses a ship itself as an instrument to measure cruuents. Navigation equipment on board measures the currents effect on the vessel.

n: A layer material be used as spacer or for protection.

n: 1. a thickened fluid that displaces drilling mud because of the difference in viscosity and weight between the spacer and the mud. Besides carrying lost circulation materials, spacers may be weighted with various inert materials such as fly ash and barite. 2. member of a pipeline construction gang who is responsible for assuring that the exact distance between the beveled pipe ends for a welding process to be used on the joint is maintained. Spacers strike a wedge into the interface between the pipe bevels and then maneuver them to an exact, uniform distance around the entire circumference.

n: A viscous fluid used to aid removal of drilling fluids before a primary cementing operation. The spacer is prepared with specific fluid characteristics, such as viscosity and density, that are engineered to displace the drilling fluid while enabling place

a fluid used between two fluids to prevent contamination.

n: Any liquid used to physically separate one special-purpose liquid from another. Special-purpose liquids are typically prone to contamination, so a spacer fluid compatible with each is used between the two. The most common spacer is simply water.